Table 2.

Total number of dead mites counted during the observation period (main treatment and follow-up treatment) for each treatment group are given together with the mean mites per colony ± standard deviation. Additionally, the range of mite counts per colony and the mean mites during follow-up treatment are given. Positive control colonies were treated with 250 ml 60% formic acid. For A1 we applied 2.5 kg 50 mM LiCl candy over period of 9 days; A2: 2 kg 50 mM LiCl candy in 5 days; A3: 4 × 0.5 kg 50 mM LiCl candy in seven-day intervals with no queen caging

Treatment	Year	Total mites	No. of colonies	Mean mites/colony	Range of mite counts/colony	Mean mites during follow-up treatment
Positive control	2021	27,783	9	3087 ± 915	1305–4710	933
A1	2021	12,776	6	2129 ± 96	1154–3508	36.3
A2	2022	4558	10	456 ± 296	168–1102	83.1
A3	2022	14,291	10	1429 ± 1155	153–3231	95.9